What causes polar jet streams to form?(1 point)

Question

Responses

1rapid changes in wind direction

2high-pressure systems

3warm and cold air masses

4air masses moving away from each other

Answer 1

The correct answer is (3) warm and cold air masses. Polar jet streams are caused by the large temperature difference between the polar regions and the warmer latitudes. This temperature difference creates a pressure gradient which causes the jet stream to form. The jet stream separates the cold polar air from the warmer air to the south, resulting in the formation of a narrow, fast-moving band of air called a jet stream.